/* ============================================
   Loading State Styles - KCTTabienrod
   ============================================ */

/* Loading Overlay Container */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* Loading Container */
.loading-container {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 400px;
  width: 90%;
  animation: slideInUp 0.4s ease-out;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading Spinner */
.loading-spinner {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  position: relative;
  animation: spin 1.5s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Spinner Ring */
.loading-spinner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 4px solid #f0f0f0;
  border-top: 4px solid #f1c40f;
  border-right: 4px solid #f39c12;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(241, 196, 15, 0.3);
}

/* Loading Text */
.loading-text {
  font-family: "Kanit", sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
  margin: 15px 0 10px;
  letter-spacing: 0.5px;
}

/* Loading Subtext */
.loading-subtext {
  font-family: "Kanit", sans-serif;
  font-size: 0.9rem;
  color: #7f8c8d;
  margin: 0;
  animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

/* Animated Dots */
.loading-dots {
  display: inline-block;
  margin-left: 5px;
}

.loading-dots::after {
  content: ".";
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%,
  20% {
    content: ".";
  }
  40% {
    content: "..";
  }
  60% {
    content: "...";
  }
  80%,
  100% {
    content: "";
  }
}

/* Loading Bar (Progress) */
.loading-bar {
  width: 100%;
  height: 4px;
  background: #e0e0e0;
  border-radius: 2px;
  margin-top: 20px;
  overflow: hidden;
}

.loading-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #f1c40f, #f39c12, #e67e22);
  border-radius: 2px;
  animation: progressBar 2s ease-in-out infinite;
  box-shadow: 0 0 10px rgba(241, 196, 15, 0.5);
}

@keyframes progressBar {
  0% {
    width: 0%;
  }
  50% {
    width: 80%;
  }
  100% {
    width: 100%;
  }
}

/* Loading Badge (for inline loading) */
.loading-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: none;
  animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mini Spinner for Badge */
.loading-badge-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(44, 62, 80, 0.2);
  border-top: 2px solid #2c3e50;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Loading Skeleton Enhancements */
.skeleton-container {
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.skeleton-card {
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

/* Loading State for Button */
.btn.loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
  min-width: 120px;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: button-spin 0.8s linear infinite;
}

@keyframes button-spin {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .loading-container {
    padding: 30px 20px;
    max-width: 300px;
  }

  .loading-spinner {
    width: 50px;
    height: 50px;
  }

  .loading-text {
    font-size: 1rem;
  }

  .loading-subtext {
    font-size: 0.85rem;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .loading-container {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #ecf0f1;
  }

  .loading-text {
    color: #ecf0f1;
  }

  .loading-subtext {
    color: #bdc3c7;
  }

  .loading-bar {
    background: #34495e;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .loading-overlay,
  .loading-container,
  .loading-spinner,
  .loading-bar-fill,
  .loading-badge,
  .skeleton-card {
    animation: none;
  }

  .loading-spinner::before {
    border-top-color: #f1c40f;
  }
}